Accelerated Weathering Test - 1 Year Outdoors = How Long In A Test Chamber?
Many of our customers who want to perform accelerated weathering tests ask us how long in a test chamber equates to 1 year outdoors. Unfortunately, there is no direct correlation. Cascade TEK's accelerated weathering webpage offers more detail, but don’t take our word for it. Attached is an article from Q-Lab Corporation, one of the leading manufacturers of weathering/UV exposure chambers.
There is hope. “….hundreds of labs have successfully developed their own internal ‘Rule of Thumb’…” And Cascade TEK can get you pointed in the right direction with bulb type and duration.
Overall, ASTM G154 and G155 are the standards for UV tests and accelerated weathering. Ask us for more details.